PFEA111-20控制器,PFEA111-20使用过程
HSS模块提供对节气门位置的控制涡轮机速度控制系统。MFP模块将数据发送到HSS模块，用于指导液压执行器的控制（通过伺服阀或I/H转换器）。通过发送位置根据HSS模块的要求，MFP模块启动更改涡轮转速。位置需求通过输入/输出传递扩展器总线至HSS模块。车载微处理器
读取需求并将其加载到数模转换（D/a）中转换器。产生的模拟值驱动伺服阀。
PFEA111-20控制器伺服阀将液压油加载到双离合器的一侧动作液压执行器。当液压执行器打开或关闭节流阀，涡轮转速改变。如果液压执行器由I/H转换器驱动，然后HSS模块将MFP模块发送的信号缩放到4至20毫安信号或20至160毫安信号和绕过PID控制器电路。这是4到20毫安信号线性驱动I/H转换器加载液压油至双作用执行器的一侧。
MFP模块在其配置中需要功能代码55或150，以指导IMHSS03模块的操作。功能代码55定义了模块地址、操作模式（校准或正常）、校准周期时间并存储校准数据。十个输出块包括执行器位置，数模转换器输出、伺服阀线圈输出电流以及模块和过程的状态输出设备
The HSS module provides control of throttle valve position in a
turbine speed control system. The MFP module sends data to
the HSS module, which directs the control of a hydraulic actu
ator (via a servo valve or I/H converter). By sending a position
demand to the HSS module, the MFP module initiates a change
in turbine speed. The position demand travels over the I/O
expander bus to the HSS module. An on-board microprocessor
reads the demand and loads it into a digital-to-analog (D/A)
converter. The resulting analog value drives the servo valve.
The servo valve loads hydraulic fluid to one side of a double
acting hydraulic actuator. As the hydraulic actuator opens or
closes the throttle valve, the turbine speed changes. If the
hydraulic actuator is being driven by an I/H converter, then
the HSS module scales the signal sent by the MFP module to a
four to 20 milliamp signal or 20 to 160 milliamp signal and the
PID controller circuitry is bypassed. This four to 20 milliamp
signal linearly drives the I/H converter to load hydraulic fluid
to one side of the double acting actuator.
The MFP module requires function code 55 or 150 in its config
uration to direct the operation of the IMHSS03 module. Func
tion code 55 defines the module address, mode of operation
(calibration or normal), calibration cycle time and stores cali
bration data. The ten output blocks include actuator position,
digital-to-analog converter output, servo valve coil output cur
rent, and status outputs for the module and process
equipment.
